The disclosure relates to a predictive EGR control method and terminal device, and a storage medium. The method includes calculating f there is a slowdown section ahead of a vehicle, an engine output torque to be reduced for travelling from a current position to a start position of the slowdown section and/or an engine output torque to be increased for travelling from the start position of the slowdown section to an end position of the slowdown section, and thereby adjusting an EGR rate according to the engine output torque to be reduced increased. Before the vehicle running at a high load enters the slowdown section, an EGR valve can be opened in advance to increase the EGR rate, thereby reducing harmful gas emissions.

The disclosure relates to a predictive EGR control method and terminal device, and a storage medium. The method includes calculating f there is a slowdown section ahead of a vehicle, an engine output torque to be reduced for travelling from a current position to a start position of the slowdown section and/or an engine output torque to be increased for travelling from the start position of the slowdown section to an end position of the slowdown section, and thereby adjusting an EGR rate according to the engine output torque to be reduced increased. Before the vehicle running at a high load enters the slowdown section, an EGR valve can be opened in advance to increase the EGR rate, thereby reducing harmful gas emissions.

A controller for a hybrid electric vehicle includes an engine ECU and a HEVECU. The engine ECU executes a partial cylinder fuel cut-off control that stops supply of fuel to one or more cylinders and supplies fuel to the remaining ones of the cylinders. Further, the engine ECU sends control information of the partial cylinder fuel cut-off control to the HEVECU. The HEVECU executes a driving force compensation control so as to compensate for, using driving force of a motor generator, a decrease in driving force of a multi-cylinder engine that results from the execution of the partial cylinder fuel cut-off control. The engine ECU prohibits the execution of the partial cylinder fuel cut-off control when an anomaly possibly occurs in the sending and receiving of the control information of the partial cylinder fuel cut-off control.

A vehicle control device is configured to: execute a fuel cut control for stopping fuel supply to the internal combustion engine in response to a deceleration request to the vehicle; engage the lock-up clutch and open a throttle of the vehicle during the execution of the fuel cut control; close the throttle and execute the motor assist in a case where there is an acceleration request to the vehicle while the lock-up clutch is engaged, the throttle is opened, and the fuel cut control is executed; end the fuel cut control and resume fuel supply to the internal combustion engine when an intake pressure of the internal combustion engine reaches a predetermined startable negative pressure after the throttle is closed; and disengage the lock-up clutch when the fuel supply to the internal combustion engine is resumed.

A controller executes a fuel introduction process when stopping combustion in a cylinder under a situation in which a crankshaft is rotating. The fuel introduction process causes a fuel injection valve to inject fuel and causes the fuel to flow out unburned from inside the cylinder to an exhaust passage. The opening degree of an exhaust gas recirculation valve at a point in time when a state in which the execution condition of the fuel introduction process is not satisfied is switched to a state in which the execution condition of the fuel introduction process is satisfied is a preliminary opening degree. During the execution of the fuel introduction process, the recirculation valve controlling section causes the opening degree of the exhaust gas recirculation valve to be smaller than the preliminary opening degree.

Methods and systems are provided for controlling an EGR valve and VGT vanes during engine braking. In one example, a method may include during an engine braking event in an engine, coordinating adjustments of both of a cross-sectional area of an inlet of a turbine and an opening of a valve of an exhaust gas recirculation (EGR) system to achieve a desired braking power and to maintain an exhaust system temperature above a threshold temperature during the engine braking event.

A system is provided for controlling engine fueling and includes an internal combustion engine, a fuel source, means for delivering fuel from the fuel source to the engine, and a controller configured to control the fuel delivering means according to a first operational mode so that, upon attaining a predetermined operational state of the engine, an amount of fuel delivered to the engine per unit time is kept constant. The system will typically but not necessarily be provided in a vehicle such as a truck or a passenger automobile. A method for controlling engine fueling is also provided.

A system is provided for controlling engine fueling and includes an internal combustion engine, a fuel source, means for delivering fuel from the fuel source to the engine, and a controller configured to control the fuel delivering means according to a first operational mode so that, upon attaining a predetermined operational state of the engine, an amount of fuel delivered to the engine per unit time is kept constant. The system will typically but not necessarily be provided in a vehicle such as a truck or a passenger automobile. A method for controlling engine fueling is also provided.

A method for controlling a powertrain of a vehicle, the powertrain comprising: an engine comprising mutually independently operable valves, the engine being configured to be operated in a four-stroke operation mode, and a drivetrain comprising a transmission,
the method comprising: while operating the engine in the four-stroke operation mode, identifying that a critical situation applies or is expected to apply, in which a fast downshift of the transmission is required, initiating a downshift process in response to the identification of the critical situation, during at least a part of the downshift process, increasing an engine speed by controlling at least the mutually independently operable valves of the engine such that the engine is temporarily operated in a two-stroke operation mode.

A method for controlling a powertrain of a vehicle, the powertrain comprising: an engine comprising mutually independently operable valves, the engine being configured to be operated in a four-stroke operation mode, and a drivetrain comprising a transmission,
the method comprising: while operating the engine in the four-stroke operation mode, identifying that a critical situation applies or is expected to apply, in which a fast downshift of the transmission is required, initiating a downshift process in response to the identification of the critical situation, during at least a part of the downshift process, increasing an engine speed by controlling at least the mutually independently operable valves of the engine such that the engine is temporarily operated in a two-stroke operation mode.